3. Check Intake Air Temperature Sensor Ground Circuit For Open And Short

1. Turn ignition switch OFF.
2. Disconnect ECM.
3. Check harness continuity between mass air flow sensor terminal 3 and ECM terminal 109.

   Refer to Wiring Diagram.

   1. Continuity should exist. 
4. Also check harness for short to ground and short to power.

OK or NG 

OK: GO TO 4.

NG: Repair open circuit or short to ground or short to power in harness or connectors.